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IoT on AWS with NodeMCU for less than 5 Euros
1. IoT on AWS and NodeMCU
FOR LESS THAN 5 EUROS
June 2016
01
2. About Johann
• Tech Evangelist @Stylight
• 15+ years in tech
• In Germany for 2 years
• 7 years in San Francisco
doing startups
• Organizer of many meetups
2
4. What are you going to learn?
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• Discover ESP8266/NodeMCU
• Introduction to AWS IoT
• Hands-on
• Connecting a NodeMCU board
• Configuring Arduino environment for NodeMCU
• Installing AWS SDK
• Publishing sensor data to AWS IoT
• Trigger rules to invoke Lambda function
8. Why?
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• Cheap is good in IoT because
it scales
• But no direct support of AWS
IoT because no TLS 1.2
module yet in ESP8266
• Hackers always find
workarounds
10. Introduction to AWS IoT
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• Serverless way to connect your IoT devices and start
processing data
• Supports MQTT, HTTP
• Secure - communication through use of X.509 Certificates
• Can connect huge amount of sensors, store and process the
data in real-time
12. What’s a Thing?
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• An IoT Device
• Sensors, actuators,
• In our case a NodeCMU board
13. What’s the Message Broker?
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• Used to securely exchange messages following the publish-
subscribe pattern, between IoT applications and Things.
• MQTT to publish/subscribe
• HTTP to publish
• Note: MQTT uses TLS 1.2 which is not available in NodeMCU
• Let’s use HTTP then!
14. What’s the Rule Engine?
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• Used to process messages and talk to other AWS
components like Lambda, DynamoDB, etc
• SQL-Based language to select specific messages
to be passed along.
15. What are Thing Shadows?
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• Devices sometimes go offline
• A Thing Shadow provide a persistent
representation of a Thing
• A Thing can sync its state to its Thing Shadow
through the REST API
18. We are going to:
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• Create a Thing in AWS IoT
• Publish sensor data from our NodeMCU to
update our Thing Shadow
• Have a look at the MQTT Client
• Create a Rule to trigger a lambda when
humidity is > 50%
• Publish the data to Slack